366 DR. A. E, SHIPLEY ON PARASITES [ Mar. 16, 
Gili) Heterakis perspicillum (Rud.).* 
v. p. 365. 
(iv) Heterakis magnopapilla (v. Linstow). T 
(v) Strongylus papillatus (v. Linstow). £ 
Wolfthigel found both males and females in great numbers in 
the alimentary canal of the Blackeock. It had previously been 
described by v. Linstow from the intestine of the Great Bustard, 
Otis tarda. 
(vi) Strongylus hastatus (v. Linstow). $ 
(vii) Nematode % genus, recorded by Wolffhiigel from the 
ceca. 
TREMATODA. 
(1) Lyperosomum corrigia (Braun). |) 
A fluke nearly allied to Distomum plesiostomum (vy. Linstow, 
1883) from Perdix greca. 
CESTODA. 
(i) Davainea retusa (Clerc). &| 
Gi) Davainea urogalli (Modeer). 
Described by Krabbe from specimens in Perdix greca, Megalo- 
perdix nigelli, Tetrao urogallus and T. tetria. 
(i) Davainea villosa (Bloch). 
Also found in a Megaloperdix nigelli in Turkestan. 
(iv) Hymenolepis microps (Diesing).** 
This species, described by Wolffhiigel under the name of 
H. tetraonis from a few fragments, is more fully described by me 
from Lagopus scoticus in the anatomical part of this memoir, 
cf. p. 358. 
A CANTHOCEPHALA. 
(i) Echinorhynchus stellaris (Molin). 
Usually found in the Duck, but Dr. von Linstow tells me he has 
seen it in the larval stage encysted on the outside wall of the 
intestine in the Blackcock. 
* “Glasnik. Naravosl. druzt.” (Societas historico-naturalis Croatica), Zagreb, 
1887, p. 278. 
+ “Schr. Ges.” Konigsb. xlvii. 1906, p. 112. 
Arch. Naturge, 1882 (i), p. 3. 
Tbid., 1905, p. 274. 
|| Centrbl. Bakter. xxix. 1901, p. 946. 
@ Rev. Suisse Zool., xi. 1903, p. 363. 
=* “ Beitrag zur Kenntniss der Vogelhelminthen,” Freiburg i. B., 1900. 
